implement window.open, create auxiliary browsing context

components/script_traits/lib.rs

@@ -576,6 +576,19 @@ pub enum IFrameSandboxState {
     IFrameUnsandboxed,
 }
 
+/// Specifies the information required to load an auxiliary browsing context.
+#[derive(Deserialize, Serialize)]
+pub struct AuxiliaryBrowsingContextLoadInfo {
+    /// The pipeline opener browsing context.
+    pub opener_pipeline_id: PipelineId,
+    /// The new top-level ID for the auxiliary.
+    pub new_top_level_browsing_context_id: TopLevelBrowsingContextId,
+    /// The new browsing context ID.
+    pub new_browsing_context_id: BrowsingContextId,
+    /// The new pipeline ID for the auxiliary.
+    pub new_pipeline_id: PipelineId,
+}
+
 /// Specifies the information required to load an iframe.
 #[derive(Deserialize, Serialize)]
 pub struct IFrameLoadInfo {

components/script_traits/script_msg.rs

@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use AnimationState;
+use AuxiliaryBrowsingContextLoadInfo;
 use DocumentState;
 use IFrameLoadInfo;
 use IFrameLoadInfoWithData;
@@ -137,6 +138,8 @@ pub enum ScriptMsg {
     ScriptLoadedURLInIFrame(IFrameLoadInfoWithData),
     /// A load of the initial `about:blank` has been completed in an IFrame.
     ScriptNewIFrame(IFrameLoadInfo, IpcSender<LayoutControlMsg>),
+    /// Script has opened a new auxiliary browsing context.
+    ScriptNewAuxiliary(AuxiliaryBrowsingContextLoadInfo, IpcSender<LayoutControlMsg>),
     /// Requests that the constellation set the contents of the clipboard
     SetClipboardContents(String),
     /// Mark a new document as active
@@ -196,6 +199,7 @@ impl fmt::Debug for ScriptMsg {
             VisibilityChangeComplete(..) => "VisibilityChangeComplete",
             ScriptLoadedURLInIFrame(..) => "ScriptLoadedURLInIFrame",
             ScriptNewIFrame(..) => "ScriptNewIFrame",
+            ScriptNewAuxiliary(..) => "ScriptNewAuxiliary",
             SetClipboardContents(..) => "SetClipboardContents",
             ActivateDocument => "ActivateDocument",
             SetDocumentState(..) => "SetDocumentState",